Donald Hermens, M.D.
NPI 1962475442 · Gastroenterology Physician · Quincy, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Hermens, M.D. is a Gastroenterology Physician provider in Quincy, IL (NPI 1962475442).
Provider details
- NPI number
- 1962475442
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036101026 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 599 | 581 |
| Pantoprazole Sodium | 274 | 96 |
| Budesonidebrand: Budesonide Dr | 100 | 26 |
| Mesalamine | 71 | 23 |
| Dicyclomine Hcl | 60 | — |
| Cholestyramine (with Sugar)brand: Cholestyramine | 60 | 14 |
| Famotidine | 38 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$44 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-07
- Last updated
- 2021-12-15
Frequently asked questions
- What is Donald Hermens's NPI number?
- Donald Hermens's National Provider Identifier (NPI) is 1962475442, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Hermens's specialty?
- Donald Hermens is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Hermens located?
- Donald Hermens's practice location on file with NPPES is 1025 Maine St, Quincy, IL 62301-4038.
- What is Donald Hermens's phone number?
- The practice phone number listed in the NPPES registry for Donald Hermens is (217) 222-6550.
- Does Donald Hermens accept Medicare?
- Donald Hermens is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Hermens's NPI active?
- Yes — Donald Hermens's NPI (1962475442) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.